package demo603;

    public class User {
        // 属性
        private int id;
        private String username;
        private String password;

        // 全参构造方法
        public User(int id, String username, String password) {
            this.id = id;
            this.username = username;
            this.password = password;
        }

        // 无参构造方法
        public User() {
        }

        // getter 和 setter 方法

        public int getId() {
            return id;
        }

        public void setId(int id) {
            this.id = id;
        }

        public String getUsername() {
            return username;
        }

        public void setUsername(String username) {
            this.username = username;
        }

        public String getPassword() {
            return password;
        }

        public void setPassword(String password) {
            this.password = password;
        }

        // toString 方法（可选）
        @Override
        public String toString() {
            return "User{" +
                    "id=" + id +
                    ", username='" + username + '\'' +
                    ", password='" + password + '\'' +
                    '}';
        }
    }


